The Collaborative International Dictionary of English v.0.48:

Clinanthium \Cli*nan"thi*um\, n. [NL., fr. Gr. ? bed + ?
   flower.] (Bot.)
   The receptacle of the flowers in a composite plant; -- also
   called clinium.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Clinium \Clin"i*um\, n. [NL., fr. Gr. kli`nh bed.] (Bot.)
   See Clinanthium.
   [1913 Webster]